Motorized broom

ABSTRACT

A motorized broom includes a handle, a universal connector, and a cleaning portion. The universal connector is used for connecting the handle and the cleaning portion. Thus, the universal connector together with the handle is rotatable relative to the cleaning portion universally, so that the cleaning portion is angle adjustable so as to clean the corner of the house exactly. In addition, the dust collector is removably mounted on the main base, so that the dust collector can be removed from the main base easily and rapidly, thereby facilitating a user removing the dust collector.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a broom, and more particularly to amotorized broom.

2. Description of the Related Art

A conventional broom comprises a handle, a cleaning portion mounted onthe lower end of the handle, and multiple bristles mounted on thecleaning portion. However, the cleaning portion is fixed on the handleso that the angle and position of the cleaning portion cannot beadjusted to fit the corresponding angle and position of the corner ofthe house, thereby limiting the cleaning effect of the cleaning portion.

SUMMARY OF THE INVENTION

The present invention is to mitigate and/or obviate the disadvantage ofthe conventional broom.

The primary objective of the present invention is to provide a motorizedbroom that is angle adjustable.

Another objective of the present invention is to provide a motorizedbroom, wherein the universal connector together with the handle isrotatable relative to the cleaning portion universally, so that thecleaning portion is angle adjustable so as to clean the corner of thehouse exactly.

A further objective of the present invention is to provide a motorizedbroom, wherein the dust collector is removably mounted on the main base,so that the dust collector can be removed from the main base easily andrapidly, thereby facilitating a user removing the dust collector.

In accordance with the present invention, there is provided a motorizedbroom, comprising:

a handle having an elongated shape and a multi-stage structure, whereinthe handle is provided with a switch, a mounting seat and a chargeablebattery removably mounted on the mounting seat;

a universal connector connecting the handle and the cleaning portion andincluding a seat portion, a ball portion and a shank portion, whereinthe seat portion is secured to the cleaning portion, the ball portion ispivotally mounted on the seat portion, and the shank portion has a lowerend pivotally mounted on the ball portion, so that the universalconnector together with the handle is rotatable relative to the cleaningportion freely and has an upper end connected to the handle;

a cleaning portion having a triangular shape and including a cover, amain base, and a dust collector, wherein the main base has a first sidefor mounting the seat portion and a second side provided with a motorchamber for mounting a motor, the motor is connected to the mountingseat by an electric wire and has a shaft having a gear meshing with agear which is located at a central portion of two helical brushes todrive the helical brushes to rotate, each of the helical brushes has anend provided with a bevel gear meshing with a bevel gear of anotherhelical brush, so that the helical brushes at three sides of thetriangular cleaning portion are rotated inwardly and simultaneously,each of the helical brushes has brush portions arranged in a helicalmanner, each of the brush portions of the respective helical brush hasmultiple bristles and has a length reaching the ground, each of thethree sides of the triangular cleaning portion is provided with an endbrush that is rotated with the helical brushes simultaneously, the endbrush has six brush portions arranged in a S-shaped manner to conveytrash at a corner inwardly, the cover is mounted on the main base, themain base is mounted on the dust collector, the dust collectorencompasses the brush portions, the dust collector has a peripheral wallformed with a ramp having a bottom formed with a scraper to introducethe trash into the dust collector, the main base has a downward verticalwall to conduct the direction of the trash so that the trash is pushedinto the dust collector smoothly without being disturbed by theperturbation produced by rotation of the brush portions.

Further benefits and advantages of the present invention will becomeapparent after a careful reading of the detailed description withappropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a motorized broom in accordance with thepreferred embodiment of the present invention;

FIG. 2 is a partially exploded perspective view of the motorized broomas shown in FIG. 1;

FIG. 3 is a partially exploded perspective view of the motorized broomas shown in FIG. 1;

FIG. 4 is a partially exploded perspective view of the motorized broomas shown in FIG. 1;

FIG. 5 is a plan cross-sectional view of the motorized broom as shown inFIG. 1;

FIG. 6 is a plan cross-sectional view of the motorized broom as shown inFIG. 1;

FIG. 7 is a schematic plan operational view of the motorized broom asshown in FIG. 1 in use;

FIG. 8 is a plan cross-sectional view of the motorized broom as shown inFIG. 1;

FIG. 9 is a plan cross-sectional view of the motorized broom as shown inFIG. 1;

FIG. 10 is a locally perspective view of the motorized broom as shown inFIG. 1;

FIG. 11 is a partially exploded perspective view of the motorized broomas shown in FIG. 1; and

FIG. 12 is an exploded perspective view of the motorized broom as shownin FIG. 9.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings and initially to FIG. 1, a motorized broom inaccordance with the preferred embodiment of the present inventioncomprises a handle 1, a universal connector 2, and a cleaning portion 3.The handle 1 is provided with a mounting seat 11 and a chargeablebattery 10 removably mounted on the mounting seat 11.

Referring to FIGS. 1 and 2, the handle 1 has a multi-stage structure andincludes multiple sub-handles, wherein one sub-handle has an endprovided with a stepped hole 13, a screw bore 131 and multipleprotruding teeth 132, and another adjacent sub-handle has an endprovided with a stepped post 14 inserted into the stepped hole 13, anouter thread 141 screwed into the screw bore 131 and multiple serratedgrooves 142 engaged with the protruding teeth 132. Thus, the sub-handlesof the handle 1 are combined with each other.

Referring to FIGS. 1 and 3, the universal connector 2 connects thehandle 1 and the cleaning portion 3 to universally adjust the positionof the triangular corners 34 of the cleaning portion 3 so that thetriangular corners 34 of the cleaning portion 3 can reach the corner ofa house or a furniture. The universal connector 2 includes a seatportion 23, a ball portion 22 and a shank portion 21. The seat portion23 is secured to the main base 32 of the cleaning portion 3 and providedwith two pivot points 231. The ball portion 22 is pivotally mounted onthe two pivot points 231 of the seat portion 23. The shank portion 21has a lower end provided with two pivot points 212 pivotally mounted onthe ball portion 22, so that the universal connector 2 together with thehandle 1 is rotatable relative to the cleaning portion 3 universally.The shank portion 21 has an upper end provided with an insert 211 formedwith at least one insertion hole 2111, a limit slot 2112 and a flexiblepositioning plate 2113 having a positioning boss 2114. The handle 1 hasa lower end provided with a mounting portion mounted on the insert 211to form an electrical connection and formed with at least one plug 12inserted into the insertion hole 2111, a protruding strip 121 limited inthe limit slot 2112 and a positioning hole 122 to allow passage of thepositioning boss 2114 so that the handle 1 is positioned on the shankportion 21.

Referring to FIGS. 1 and 4, the cleaning portion 3 has a triangularshape and includes a cover 31, a main base 32, and a dust collector 33.The main base 32 has a first side for mounting the seat portion 23 and asecond side provided with a motor chamber 321 for mounting a motor 40.As shown in FIG. 10, the motor 40 has a shaft 41 having a gear 42meshing with a gear 50 which is located at a central portion of twohelical brushes 60 mounted on a periphery of the main base 32. The gear50 is integrally formed with an axle 51 having two ends each formed witha flat insert 52 inserted into a flat recess 61 formed in one end ofeach of the helical brushes 60. As shown in FIG. 11, the other end ofeach of the helical brushes 60 has a bevel gear 62 meshing with a bevelgear 62 a of another helical brush 60 a. As shown in FIG. 4, an endbrush 63 has a flat recess 631 to allow insertion of a flat insert 64formed on one end of the respective helical brush 60. The end brush 63has six brush portions 632 arranged in a S-shaped manner to convey thecorner trash of the house inwardly. The main base 32 has a plurality ofpost holes 322 and two slots 323. The dust collector 33 has a pluralityof posts 331 inserted into the post holes 322 and two elastic plates 332snapped into the slots 323 so that the dust collector 33 is mounted onthe main base 32 closely. Each of the elastic plates 332 has a taperedwedge block 3321 extended through the slots 323 and elasticallyretracted into the slots 323 to snap the dust collector 33 onto the mainbase 32. The main base 32 has a plurality of positioning holes 324 and aplurality of slidable locking members 325. The cover 31 has a pluralityof downward extended columns 311 inserted into the positioning holes 324and a plurality of depressions 312 snapped onto the locking members 325so that the cover 31 is mounted on the main base 32 closely.

The chargeable battery 10 supplies an electric power which istransmitted by a switch 15 and an electric wire 16 to the motor 40, sothat the motorized broom forms an electric loop.

Referring to FIG. 5, each of the brush portions 601 of the respectivehelical brush 60 has multiple bristles and has a length reaching theground so as to clean the trash and dust exactly. The dust collector 33has a peripheral wall formed with a ramp 333 having a bottom formed witha scraper 334 to scrape the trash by co-operation of the helical brushportions 601 so that the trash is pushed to pass through the ramp 333into the dust collector 33. The main base 32 has a downward verticalwall 326 to conduct the direction of the trash so that the trash ispushed into the dust collector 33 smoothly without being disturbed bythe perturbation produced by rotation of the helical brush portions 601.

In addition, the cover 31 covers the brush portions 601 efficiently tostop the trash, thereby preventing the trash from being carried outwardby rotation of the helical brush portions 601.

In addition, as shown in FIG. 4, the main base 32 has windows 327 tofacilitate a user inspecting if the trash contained in the dustcollector 33 is full.

Referring to FIGS. 6 and 7, the main base 32 has triangular corners eachformed with a box 328 for mounting a spherical support 35 rested on theground, so that the scraper 334 and the brush portions 601 and 632 arespaced from the ground, thereby enhancing the cleaning effect of thebrush portions 601 and 632.

In addition, as shown in FIG. 7, the universal connector 2 together withthe handle 1 is rotatable relative to the cleaning portion 3universally, so that the cleaning portion 3 is used to clean the cornerof the house exactly.

Referring to FIGS. 1, 4 and 10, when the switch 15 is turned on, thechargeable battery 10 supplies an electric power to the motor 40 whichis driven to rotate the gear 42 which rotates the gear 50 which rotatesthe helical brushes 60 which rotates the end brush 63 simultaneously.The helical brushes 60 also rotates other helical brushes 60 asimultaneously by the bevel gears 62 and 62 a. Thus, the brush portions601 and 632 pushes the trash toward the dust collector 33.

In addition, the cover 31 has a bottom formed with a plurality ofopenings 313 spaced from the ground to facilitate the trash entering thehelical brushes 60.

Referring to FIG. 8, each of the helical brushes 60 is provided with adustproof ring 70 mounted on the connection between the box 328 and therespective helical brush 60 to prevent the dust from entering the box328 to contaminate the bevel gears 62 and 62 a.

Referring to FIGS. 6, 9 and 12, the spherical support 35 has an insideformed with a conical reduced hole 351, and the box 328 has twooutwardly extended elastic plates 3281 inserted into the conical reducedhole 351, so that the spherical support 35 is mounted on the box 328closely.

Accordingly, the universal connector 2 together with the handle 1 isrotatable relative to the cleaning portion 3 universally, so that thecleaning portion 3 is angle adjustable so as to clean the corner of thehouse exactly. In addition, the dust collector 33 is removably mountedon the main base 32, so that the dust collector 33 can be removed fromthe main base 32 easily and rapidly, thereby facilitating a userremoving the dust collector 33.

Although the invention has been explained in relation to its preferredembodiment(s) as mentioned above, it is to be understood that many otherpossible modifications and variations can be made without departing fromthe scope of the present invention. It is, therefore, contemplated thatthe appended claim or claims will cover such modifications andvariations that fall within the true scope of the invention.

1. A motorized broom, comprising: a handle having an elongated shape anda multi-stage structure, wherein the handle is provided with a switch, amounting seat and a chargeable battery removably mounted on the mountingseat; a universal connector connecting the handle and the cleaningportion and including a seat portion, a ball portion and a shankportion, wherein the seat portion is secured to the cleaning portion,the ball portion is pivotally mounted on the seat portion, and the shankportion has a lower end pivotally mounted on the ball portion, so thatthe universal connector together with the handle is rotatable relativeto the cleaning portion freely and has an upper end connected to thehandle; a cleaning portion having a triangular shape and including acover, a main base, and a dust collector, wherein the main base has afirst side for mounting the seat portion and a second side provided witha motor chamber for mounting a motor, the motor is connected to themounting seat by an electric wire and has a shaft having a gear meshingwith a gear which is located at a central portion of two helical brushesto drive the helical brushes to rotate, each of the helical brushes hasan end provided with a bevel gear meshing with a bevel gear of anotherhelical brush, so that the helical brushes at three sides of thetriangular cleaning portion are rotated inwardly and simultaneously,each of the helical brushes has brush portions arranged in a helicalmanner, each of the brush portions of the respective helical brush hasmultiple bristles and has a length reaching the ground, each of thethree sides of the triangular cleaning portion is provided with an endbrush that is rotated with the helical brushes simultaneously, the endbrush has six brush portions arranged in a S-shaped manner to conveytrash at a corner inwardly, the cover is mounted on the main base, themain base is mounted on the dust collector, the dust collectorencompasses the brush portions, the dust collector has a peripheral wallformed with a ramp having a bottom formed with a scraper to introducethe trash into the dust collector, the main base has a downward verticalwall to conduct the direction of the trash so that the trash is pushedinto the dust collector smoothly without being disturbed by theperturbation produced by rotation of the brush portions.
 2. Themotorized broom in accordance with claim 1, wherein the handle has andincludes multiple sub-handles, wherein one sub-handle has an endprovided with a stepped hole, a screw bore and multiple protrudingteeth, and another adjacent sub-handle has an end provided with astepped post inserted into the stepped hole, an outer thread screwedinto the screw bore and multiple serrated grooves engaged with theprotruding teeth, so that the sub-handles of the handle are combinedwith each other.
 3. The motorized broom in accordance with claim 1,wherein the shank portion has an upper end provided with an insertformed with at least one insertion hole, a limit slot and a flexiblepositioning plate having a positioning boss, and the handle has a lowerend provided with a mounting portion mounted on the insert to form anelectrical connection and formed with at least one plug inserted intothe insertion hole, a protruding strip limited in the limit slot and apositioning hole to allow passage of the positioning boss so that thehandle is positioned on the shank portion.
 4. The motorized broom inaccordance with claim 1, wherein the gear is integrally formed with anaxle having two ends each formed with a flat insert inserted into a flatrecess formed in one end of each of the helical brushes so that each ofthe helical brushes is rotated with the gear.
 5. The motorized broom inaccordance with claim 1, wherein the main base has a plurality of postholes and two slots, the dust collector has a plurality of postsinserted into the post holes and two elastic plates snapped into theslots so that the dust collector is mounted on the main base closely,and each of the elastic plates has a tapered wedge block extendedthrough the slots and elastically retracted into the slots to snap thedust collector onto the main base.
 6. The motorized broom in accordancewith claim 1, wherein the main base has a plurality of positioning holesand a plurality of slidable locking members, and the cover has aplurality of downward extended columns inserted into the positioningholes and a plurality of depressions snapped onto the locking members.7. The motorized broom in accordance with claim 1, wherein the main basehas windows to facilitate a user inspecting the inside of the dustcollector.
 8. The motorized broom in accordance with claim 1, whereinthe main base has triangular corners each formed with a box for mountingthe bevel gear and the helical brushes, a spherical support is mountedon the box rested on the ground, so that the scraper and the brushportions are spaced from the ground.
 9. The motorized broom inaccordance with claim 8, wherein each of the helical brushes is providedwith a dustproof ring mounted on the connection between the box and therespective helical brush.
 10. The motorized broom in accordance withclaim 8, wherein the spherical support has an inside formed with aconical reduced hole, and the box has two outwardly extended elasticplates inserted into the conical reduced hole, so that the sphericalsupport is mounted on the box closely.
 11. The motorized broom inaccordance with claim 1, wherein the cover has a bottom formed with aplurality of openings spaced from the ground to facilitate the trashentering the helical brushes.